tests/int/netdev: slight refactoring

Move the repetitive code and comment into setup_netns.

Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>

tests/integration/netdev.bats

@@ -2,7 +2,9 @@
 
 load helpers
 
-function create_netns() {
+function setup_netns() {
+	local tmp
+
 	# Create a temporary name for the test network namespace.
 	tmp=$(mktemp -u)
 	ns_name=$(basename "$tmp")
@@ -10,6 +12,9 @@ function create_netns() {
 	# Create the network namespace.
 	ip netns add "$ns_name"
 	ns_path=$(ip netns add "$ns_name" 2>&1 | sed -e 's/.*"\(.*\)".*/\1/')
+
+	# Tell runc to use it.
+	update_config '(.. | select(.type? == "network")) .path |= "'"$ns_path"'"'
 }
 
 function delete_netns() {
@@ -40,10 +45,7 @@ function teardown() {
 }
 
 @test "move network device to container network namespace and restore it back" {
-	# Tell runc which network namespace to use.
-	create_netns
-	update_config '(.. | select(.type? == "network")) .path |= "'"$ns_path"'"'
-
+	setup_netns
 	update_config ' .linux.netDevices |= {"dummy0": {} }'
 
 	runc run -d --console-socket "$CONSOLE_SOCKET" test_busybox
@@ -61,13 +63,10 @@ function teardown() {
 }
 
 @test "move network device to precreated container network namespace" {
+	setup_netns
 	update_config ' .linux.netDevices |= {"dummy0": {} }
       		| .process.args |= ["ip", "address", "show", "dev", "dummy0"]'
 
-	# Tell runc which network namespace to use.
-	create_netns
-	update_config '(.. | select(.type? == "network")) .path |= "'"$ns_path"'"'
-
 	runc run test_busybox
 	[ "$status" -eq 0 ]
 
@@ -76,13 +75,10 @@ function teardown() {
 }
 
 @test "move network device to precreated container network namespace and set ip address with global scope" {
+	setup_netns
 	update_config ' .linux.netDevices |= {"dummy0": {} }
       		| .process.args |= ["ip", "address", "show", "dev", "dummy0"]'
 
-	# Tell runc which network namespace to use.
-	create_netns
-	update_config '(.. | select(.type? == "network")) .path |= "'"$ns_path"'"'
-
 	global_ip="169.254.169.77/32"
 
 	# Set the interface down to avoid possible network problems.
@@ -101,13 +97,10 @@ function teardown() {
 }
 
 @test "move network device to precreated container network namespace and set ip address without global scope" {
+	setup_netns
 	update_config ' .linux.netDevices |= {"dummy0": {} }
       		| .process.args |= ["ip", "address", "show", "dev", "dummy0"]'
 
-	# Tell runc which network namespace to use.
-	create_netns
-	update_config '(.. | select(.type? == "network")) .path |= "'"$ns_path"'"'
-
 	non_global_ip="127.0.0.33"
 
 	# Set the interface down to avoid possible network problems.
@@ -124,15 +117,12 @@ function teardown() {
 }
 
 @test "move network device to precreated container network namespace and set mtu" {
+	setup_netns
 	update_config ' .linux.netDevices |= {"dummy0": {} }
       		| .process.args |= ["ip", "address", "show", "dev", "dummy0"]'
 
-	# Tell runc which network namespace to use.
-	create_netns
-	update_config '(.. | select(.type? == "network")) .path |= "'"$ns_path"'"'
-
 	mtu_value=1789
-	# Cet a custom mtu to the interface.
+	# Set a custom mtu to the interface.
 	ip link set mtu "$mtu_value" dev dummy0
 
 	runc run test_busybox
@@ -146,13 +136,10 @@ function teardown() {
 }
 
 @test "move network device to precreated container network namespace and set mac address" {
+	setup_netns
 	update_config ' .linux.netDevices |= {"dummy0": {} }
       		| .process.args |= ["ip", "address", "show", "dev", "dummy0"]'
 
-	# Tell runc which network namespace to use.
-	create_netns
-	update_config '(.. | select(.type? == "network")) .path |= "'"$ns_path"'"'
-
 	mac_address="00:11:22:33:44:55"
 	# set a custom mac address to the interface
 	ip link set address "$mac_address" dev dummy0
@@ -168,13 +155,10 @@ function teardown() {
 }
 
 @test "move network device to precreated container network namespace and rename" {
+	setup_netns
 	update_config ' .linux.netDevices |= { "dummy0": { "name" : "ctr_dummy0" } }
       		| .process.args |= ["ip", "address", "show", "dev", "ctr_dummy0"]'
 
-	# Tell runc which network namespace to use.
-	create_netns
-	update_config '(.. | select(.type? == "network")) .path |= "'"$ns_path"'"'
-
 	runc run test_busybox
 	[ "$status" -eq 0 ]
 
@@ -183,13 +167,10 @@ function teardown() {
 }
 
 @test "move network device to precreated container network namespace and rename and set mtu and mac and ip address" {
+	setup_netns
 	update_config ' .linux.netDevices |= { "dummy0": { "name" : "ctr_dummy0" } }
 	    		| .process.args |= ["ip", "address", "show", "dev", "ctr_dummy0"]'
 
-	# Tell runc which network namespace to use.
-	create_netns
-	update_config '(.. | select(.type? == "network")) .path |= "'"$ns_path"'"'
-
 	mtu_value=1789
 	mac_address="00:11:22:33:44:55"
 	global_ip="169.254.169.77/32"